How to build a basic flexbox layout: A tutorial with examples

The tutorial provides an in-depth guide on using the CSS Flexible Box Module, or flexbox, to create a responsive calculator user interface. Flexbox, introduced in 2009, offers a simpler method for developers to lay out and organize elements in web applications, replacing the older method of using floats. The tutorial demonstrates how to align elements and distribute space within a flexbox layout, starting with creating a flex container and then adding content such as a calculator screen and buttons. It emphasizes the ease of styling elements in flexbox and making the layout responsive using media queries, allowing the design to adapt to various screen sizes. The guide concludes by highlighting the efficiency of flexbox in reducing the complexity and amount of CSS code needed to achieve a structured and visually appealing web layout.